New video shows officers moving in on Boston suspect

April 20 - Gunfire can he heard in new video from the operation to capture Boston marathon suspect Dzhokar Tsarnaev. Deborah Gembara reports.

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New video shows heavily armed officers moving in on the Watertown home where suspect Dzhokar Tsarnaev was hiding.
A resident tipped off police after spotting blood on a boat docked behind this white house. By early evening, officers had surrounded the house.
Helicopters equipped with thermal imaging were able to confirm the 19-year-old was inside the stern of this boat.
(Shots fired)
Tsarnaev, who was taken alive, was shot in the throat and could not speak because of injuries to his tongue. Bleeding and in serious condition, he was admitted to a Boston hospital.
It isn't clear at this point when charges will be brought against him. Tsarnaev and his brother, who was killed the previous night, are the two key suspects in Boston Marathon bombings which killed three people and wounded 176.